Disturbance Recorder Transfer; Non-Standard Features - ABB RELION 615 Series Protocol Manual

1MRS759001 A
3.5.4
3.6
615 series
Communication Protocol Manual
This rule is followed by the IED if the indication signal in question is solely connected
to the disturbance recorder digital channel. If the signal, for example, is OR-ed
together with other internal digital signals or if the signal is not present in the normal
IEC 60870-5-103 Class 1 data, then the tag identification is always:
Function type = 5
Information number = disturbance recorder digital channel number
Tags are always sent in digital channel order.

Disturbance recorder transfer

When the IEC 60870-5-103 client selects a disturbance recording to be transferred, the
corresponding disturbance recording data is internally fetched from the IED's native
disturbance recorder file, cached and converted into IEC 60870-5-103 format. This
operation may take some time depending on the size of the disturbance recorder file.
Once an IEC 60870-5-103 disturbance recorder channel or tag transmission is in
progress, it can be performed till the end, even if the native original disturbance
recorder file simultaneously is deleted from the system. Unless the IEC 60870-5-103
master does not abort the transmission.
Disturbance recorder transfer verification
The IEC 60870-5-103 disturbance recorder file transfer implemented in the IED has
been verified by a third party client software.

Non-standard features

The IEC 60870-5-103 protocol is defined for a single-function protection device with
limited set of functionalities. Problem that arises in a multiple functionality IED are
mainly related to the larger amount of Class 1 events typically generated during a
fault. Modern multifunctional IEDs may create up to 20-40 times more events during
a fault compared to single function devices that were the basis for the IEC
60870-5-103 standard. IEC 60870-5-103 has some limitations:
• The protocol is defined to be used on serial interfaces (max. allowed baud rate
19200 bauds).
• The protocol can only transfer one change event per Class 1 poll.
• Unbalanced communication: the master must poll all IEDs in the network
cyclically which means that the master cannot remain polling out events from a
certain IED for a very long time, since this degrades the overall response time
from the whole substation.
Vendor-specific implementation
Section 3
29